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$136+ Cheap flights from San Diego

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/1. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SAN — SYD
25 Dec — 1 Jan1
1 adult
1 adult, Economy, 0 bags

What to know about flights from San Diego

Discover essential information about flights departing from San Diego, including flight schedules, destinations, airlines operating at the San Diego airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 25 November 2025.

Good round-trip deal

$388 or less

Good one-way deal

$112 or less
Price to beat on a round-trip flight from San Diego.
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Price to beat on a one-way flight from San Diego.
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Find flights from San Diego

Enter your travel dates to find the best prices.

Cheapest flights from San Diego
Explore the most affordable flight options available from San Diego. Find the lowest fares based on data from user searches, with prices last updated on 25 November 2025.

Sat 31/108:11SAN - BZN
Nonstop2h 55mAlaska Airlines
Wed 4/212:46BZN - SAN
Nonstop2h 44mAlaska Airlines
Deal found 24/11$243
Tue 20/114:20SAN - BZN
1 stop8h 36mHawaiian Airlines
Sat 24/112:46BZN - SAN
Nonstop2h 44mHawaiian Airlines
Deal found 23/11$259
Thu 5/214:20SAN - BZN
1 stop8h 36mAlaska Airlines
Tue 10/207:20BZN - SAN
1 stop6h 59mAlaska Airlines
Deal found 24/11$272
Thu 18/1206:40SAN - BZN
1 stop7h 10mSouthwest
Mon 22/1205:00BZN - SAN
1 stop5h 25mSouthwest
Deal found 24/11$274
Fri 23/116:20SAN - BZN
1 stop4h 55mSouthwest
Tue 27/107:40BZN - SAN
2 stops10h 05mSouthwest
Deal found 23/11$282
Sat 28/215:45SAN - BZN
1 stop6h 05mSouthwest
Sat 7/310:55BZN - SAN
Nonstop2h 50mSouthwest
Deal found 23/11$300
Tue 20/117:45SAN - BZN
1 stop4h 32mDelta
Sat 24/115:00BZN - SAN
1 stop6h 43mDelta
Deal found 22/11$305
Tue 3/208:35SAN - BZN
1 stop5h 30mSouthwest
Thu 5/211:00BZN - SAN
2 stops9h 35mSouthwest
Deal found 23/11$308
Sat 21/207:00SAN - BZN
1 stop5h 08mAlaska Airlines
Wed 25/211:33BZN - SAN
1 stop6h 13mAlaska Airlines
Deal found 23/11$319
Sun 1/308:02SAN - BZN
Nonstop3h 00mAlaska Airlines
Wed 4/315:02BZN - SAN
1 stop7h 47mAlaska Airlines
Deal found 23/11$320
Wed 28/109:37SAN - HLN
1 stop7h 34mAlaska Airlines
Sat 31/118:48HLN - SAN
1 stop19h 31mAlaska Airlines
Deal found 22/11$440
Wed 14/109:37SAN - GTF
1 stop6h 42mHawaiian Airlines
Sun 18/117:59GTF - SAN
1 stop6h 10mHawaiian Airlines
Deal found 23/11$440

Find flights from San Diego within your budget

 
Find flights departing from San Diego that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 25 November 2025. In the last 7 days, Cheapflights users made a total of 647,157 searches

Fly to

Sydney

Route

Depart

Return

Price

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Sat 31/1

08:11-12:06

Nonstop2h 55m

Bozeman Gallatin Field

Wed 4/2

12:46-14:30

Nonstop2h 44m

$243

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Tue 20/1

14:20-23:56

1 stop8h 36m

Bozeman Gallatin Field

Sat 24/1

12:46-14:30

Nonstop2h 44m

$259

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Fri 23/1

19:03-10:42

1 stop14h 39m

Bozeman Gallatin Field

Tue 27/1

07:20-15:29

1 stop9h 09m

$272

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Fri 6/2

10:16-15:23

1 stop4h 07m

Bozeman Gallatin Field

Sun 8/2

15:03-20:58

1 stop6h 55m

$272

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Thu 18/12

06:40-14:50

1 stop7h 10m

Bozeman Gallatin Field

Mon 22/12

05:00-09:25

1 stop5h 25m

$274

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Fri 23/1

16:20-22:15

1 stop4h 55m

Bozeman Gallatin Field

Tue 27/1

07:40-16:45

2 stops10h 05m

$282

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Tue 20/1

17:45-23:17

1 stop4h 32m

Bozeman Gallatin Field

Sat 24/1

15:00-20:43

1 stop6h 43m

$305

San DiegoBozeman

SAN - BZN

SANBZN

San Diego

Sat 21/2

07:00-13:08

1 stop5h 08m

Bozeman Gallatin Field

Wed 25/2

11:33-16:46

1 stop6h 13m

$319

San DiegoGreat Falls

SAN - GTF

SANGTF

San Diego

Wed 14/1

09:37-17:19

1 stop6h 42m

Great Falls

Sun 18/1

17:59-23:09

1 stop6h 10m

$440

San DiegoHelena

SAN - HLN

SANHLN

San Diego

Wed 28/1

09:37-18:11

1 stop7h 34m

Helena

Sat 31/1

18:48-13:19

1 stop19h 31m

$440

Flights are sorted by cheapest return flights first.

Deals found on 23/11

Showing 1-10 of 60 results
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Best time to book a flight from San Diego

Have a flexible travel schedule? Discover the best time to fly from San Diego with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from San Diego

Get recent, data-driven insights about flights from San Diego including ideal travel times, pricing trends, and more.

When is the best time to book a flight from San Diego?

Use this chart to determine the optimal time to book a return flight from San Diego to Sydney. Price data was last updated on 21 November 2025.

The best time to book flights from San Diego is 56 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Diego?

Currently, September is the cheapest month in which you can book a flight from San Diego (average of $821). Flying from San Diego in January will prove the most costly (average of $1,635). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from San Diego?

When flying from San Diego check dates and pricing for the following: United Airlines. As it departs for the following popular destinations: Sydney.

United Airlines
United Airlines
From $1,127
Qatar Airways
Qatar Airways
From $1,162

What are popular destinations to fly to from San Diego?

San Diego offers frequent flights to Chicago (443 flights per day), San Francisco (390 flights per day) and New York (385 flights per day).

Chicago
Chicago
From $112
San Francisco
San Francisco
From $59
Calgary
Calgary
From $588
New York
New York
From $362

What is the cheapest place to fly to from San Diego?

The cheapest city to fly to from San Diego is San Francisco, with prices starting at $59. Explore other affordable destinations below.

San Francisco
San Francisco
From $59
Chicago
Chicago
From $112
New York
New York
From $362
Las Vegas Harry Reid Intl
Las Vegas Harry Reid Intl
From $387

Airline reviews for flights from San Diego

Get insights into the airlines that provide service from San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from San Diego. In the last 7 days, Cheapflights users made a total of 647,157 searches.
Read reviews from past customers who have flown United Airlines from San Diego. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,044 reviews
Check prices

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
9,044 reviews
United Airlines
7.4
Good
9,044 reviews
Check prices

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Browse thousands of different options on Cheapflights for your next trip

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Related info for your journey

Access useful and relevant information related to your journey from San Diego. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 25 November 2025.

  • What are the most popular destinations to fly to from San Diego?

    For the current month, the most popular flights from San Diego are Boston, Chicago, Atlanta. Boston, Chicago, Atlanta are the most popular locations from San Diego year round.

  • What is the cheapest flight from San Diego to anywhere?

    Users have flown out of San Diego for as low as $59 to San Francisco (prices may vary depending on the airline and departure time). On average, users have booked flights for $356 to fly from San Diego.

  • What is the cheapest premium economy flight from San Diego?

    Options for some of the cheapest premium economy flights from San Diego we have found on Cheapflights are as follows:
    Fly from San Diego to London Heathrow Airport starting at $2,845
    Fly from San Diego to Seattle starting at $2,957

  • What is the cheapest first class flight from San Diego?

    If you’re looking to fly first-class from San Diego to anywhere, put Philadelphia on your list as prices start at $2,490 for this destination.

  • What is the cheapest month to fly from San Diego?

    Currently, the cheapest month for flights from San Diego is September. The most expensive month for flights is January. The cheapest prices are shown above but prices will vary according to departure times, airlines, class and how early you book.

  • How does Cheapflights help users find flights from San Diego?

    Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Diego. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

  • Why should you use Cheapflights to find cheap flight tickets from San Diego?

    Millions of users choose and trust Cheapflights to book the best flight deals from San Diego for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

  • Can Cheapflights find flights from San Diego with no change fees?

    Cheapflights does show flights with no change fees to all users. To see these options for flights from San Diego, users can toggle the no change fees filter when performing a flight search.

  • Can Cheapflights notify me if prices for flights from San Diego become cheaper?

    Yes! Start tracking prices for flights from San Diego today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

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Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Diego?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from San Diego. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from San Diego?

Millions of users choose and trust Cheapflights to book the best flight deals from San Diego for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from San Diego with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from San Diego, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from San Diego become cheaper?

Yes! Start tracking prices for flights from San Diego today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive the alerts.

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